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Potter Valley Project Dams

Sector: Hydro • Location: Potter Valley, California, United States

Source: Redheaded Blackbelt

Project
Under Study

The Potter Valley Project includes Scott Dam, Cape Horn Dam, and a hydropower plant in Mendocino and Lake counties, California. Southern California water agencies, including Riverside County’s Elsinore Valley Municipal Water District and the San Gorgonio Pass Water Agency, are exploring possible involvement in the future of this aging water diversion system. The project is being considered for pot

Status
Prospective
Sector
Hydro, Power Generation (CCGT), Government, Water Supply and Storage
Location
Potter Valley, California, United States of America
Updated
22 Jul 2026
Source
Redheaded Blackbelt

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Project Information FAQ

Project Information

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The project “Potter Valley Project Dams” is an infrastructure initiative in the Hydro sector, located in Potter Valley, California, United States. Taiyo aggregates data on it from Redheaded Blackbelt.

Participants

Not available for this record.

Status

Original status

under study

Taiyo status

Prospective

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

The Potter Valley Project includes Scott Dam, Cape Horn Dam, and a hydropower plant in Mendocino and Lake counties, California. Southern California water agencies, including Riverside County’s Elsinore Valley Municipal Water District and the San Gorgonio Pass Water Agency, are exploring possible involvement in the future of this aging water diversion system. The project is being considered for potential use as a pumped-storage hydroelectric facility to generate electricity by pumping water between Lake Pillsbury and Van Arsdale Reservoir, leveraging the existing dams and tunnels. There is ongoing political and environmental debate about whether to remove the dams to restore fish habitats or to retain and repurpose them for energy generation.

Original sector

Water Resources

Location

Country

United States of America (USA)

State

California

City

Potter Valley

Source

Source

Redheaded Blackbelt

URL

More Details

Record type

Project

Sector

Hydro, Power Generation (CCGT), Government, Water Supply and Storage

Article published date

2026-05-21

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